Abstract: A voice capturing method includes following operations: storing, by a buffer, voice data from a plurality of microphones; determining, by a processor, whether a target speaker exists and whether a direction of the target speaker changes according to the voice data and target speaker information; inserting a voice segment corresponding to a previous tracking direction into a current position in the voice data to generate fusion voice data when the target speaker exists and the direction of the target speaker changes from the previous tracking direction to a current tracking direction; performing, by the processor, a voice enhancement process on the fusion voice data according to the current tracking direction to generate enhanced voice data; performing, by the processor, a voice shortening process on the enhanced voice data to generate voice output data; and playing, by a playing circuit, the voice output data.

Abstract: A voice capturing method includes following operations: storing, by a buffer, voice data from a plurality of microphones; determining, by a processor, whether a target speaker exists and whether a direction of the target speaker changes according to the voice data and target speaker information; inserting a voice segment corresponding to a previous tracking direction into a current position in the voice data to generate fusion voice data when the target speaker exists and the direction of the target speaker changes from the previous tracking direction to a current tracking direction; performing, by the processor, a voice enhancement process on the fusion voice data according to the current tracking direction to generate enhanced voice data; performing, by the processor, a voice shortening process on the enhanced voice data to generate voice output data; and playing, by a playing circuit, the voice output data.

Abstract: A signal processing device includes an acoustic echo cancellation (AEC) circuit, a blocking matrix circuit, a controller, a subtractor, and a filter. The AEC circuit performs an AEC operation based on a far-end signal and a first input signal to generate a processed signal. The blocking matrix circuit suppresses a target signal component of the first input signal and a second input signal, to generate a reference signal. The controller generates a control coefficient based on the processed signal and the second input signal. The subtractor generates an output signal based on the filtered signal and the processed signal. The filter generates the filtered signal in response to the control coefficient, the reference signal, and the output signal.

Abstract: A signal processing device includes an acoustic echo cancellation (AEC) circuit, a blocking matrix circuit, a controller, a subtractor, and a filter. The AEC circuit performs an AEC operation based on a far-end signal and a first input signal to generate a processed signal. The blocking matrix circuit suppresses a target signal component of the first input signal and a second input signal, to generate a reference signal. The controller generates a control coefficient based on the processed signal and the second input signal. The subtractor generates an output signal based on the filtered signal and the processed signal. The filter generates the filtered signal in response to the control coefficient, the reference signal, and the output signal.